1. Benson DR, Rivera M (2013) Met Ions Life Sci 12:279–332
2. Rodgers KR, Lukat-Rodgers GS (2014) In: Ferreira GC, Kadish KM, Smith KM, Guilard R (eds) Handbook of porphyrin science with applications to chemistry, physics, materials science, engineering, biology and medicine, vol 30: heme proteins, part ii. World Scientific, Hackensack, pp 249–309
3. Wilks A, O’Neill MJ (2014) In: Ferreira GC, Kadish KM, Smith KM, Guilard R (eds) Handbook of porphyrin science with applications to chemistry, physics, materials science, engineering, biology and medicine, vol 26: heme biochemistry. World Scientific, Hackensack, pp 267–315
4. Cavallaro G, Decaria L, Rosato A (2008) J Proteome Res 7:4946–4954
5. Nobles CL, Maresso AW (2011) Metallomics 3:788–796